Metal-casting machine



April 20 1926.

H. BURCHARTZ METAL CASTING MACHINE Filed. Dec. 10, 1924 Patented -Apr.20, 1926.

UNITED STATES PATENT OFFICE.

IEE]:Ibl'lltllIGH BUItGIlIARTZ,- QF GELSENKIRCHEN, GERMANY, ASSIGNOB TOGELSEN- KIRCHENER BERGWERKS-A. G., 0]! GELSENKIROHEN, GERMANY.

METAL-QASTIN G MACHINE.

To all whom it may concern:

Be it known that I, HEINRICH BUROHARTZ, a citizen of Germany, residingat Gelsenkirchen, Germany, have invented certain new and 'usefulImprovements in Metal- Ca'sting Machines, of which the followingis aspecification.

My invention relates to metal casting machines and more particularly tomeans for casting hollow shapes such as for instance pipes 'by'thecentrifugal process. It is an object of my invention to provide a devicein which the direction of the jet of molten metal isaltered during thecasting operation.

It has already been proposed to lead the jet in a lateral and tangentialdirection by means of nozzles which deflect the molten metal and whichbeing rigidly connected with the casting spout render it'im ossible toalter the direction of the jet durlng the casting operation.

In the casting of pipes by the centrifugal process the first portion ofthe pipe to be cast is the sleeve. The metal required for the sleeve ispreferably conducted into the mould in'the axis of thespout so that the'et flows straight on. In order to cast the ,ody of the pipe it isnecessary todeflect the jet laterally so that it strikes the wall of.the mould in the direction of its rotation. In order to obtain a largercross-section at the opposite end of the pipe or to form a second sleevethereon it is desirable to direct the jet to the side and to the rear.

This is effected according to this invention by a movable deflector atthe end of the spout which can be adjusted to the required 7 position bymeans of s'uitablelinks or levers which allow, the jet. to be deflectedas desired.

In the drawings affix'ed to this specification and formin part thereof,several forms of a device em odying' my invention are illustrateddiagrammatically by way of example.

In the drawin s,

Fig. 1 is an e evation of a spout having a deflector attached to it,

Figs. 2 and 3 are lan views of this s out, illustrating two di erent'positions 0 the deflector,

Fig. 4 is a plan view of a spout provided with a curved deflector, and

Fig. 5 is a plan view of a spout having a straight deflector adapted todeflect the jet laterally,

Figs. 6 and 7 are elevations of spouts provided with a curved and astraight deflector,

of the jet in vertical direction.

Referring first to Figs l to 3, the deflector bis mounted for slidingmotion on the spout a and is adapted to be displaced thereon by means ofa rod d. The deflector is provided with a bend at its end and a slot 0in its bottom. When the deflector is in the position shown in Figs. 1and 2, the molten metal flows into the mould through the slot 0, thatis, in straight direction, as shown in Fig. '2. When the deflector b ismoved in the position shown in Fig. 3, the bottom slot 0 is covered bythe bottom of the spout so that the metal is deflected from its straightdirection as shown. Any suitable means (not shown) may be used forcontrolling the position of the deflector.

If it is not desired to increase the crosssection of the pipe at the endopposite the sleeve or to cast a sleeve at that end also, itisnotnecessary to deflect the'jet in lateral and rearward direction asshown in Fig. 3; In this case the deflector will be formed as indicatedin Figs. 2 and 3 in dot and dash lines so that the jet is only deflectedlaterally, but not rearwardly.

In the modified forms disclosed in Figs. 4 to' 7 the deflector b ispivoted to the spout a, d being .the controlling 'rod.

As shown in Fig. 4 the deflector e is curved and 'fulcrumed to the spoutat g. By means of the rod d the deflector can be bodily rotatedabove itsfulcrum g, as shown in dot and dash lines.

In the form shown in Fig. 5 a straightedged deflectorlf is arranged tobe rotated by the rod d about a fulcrum h, the jet being deflectedbyhorizontal displacement of the deflector.

The devices shown in Figs. 6 and 7 are similar to those shown in Figs. 4and 5, the difference being that the jet is deflected by verticaldisplacement of the curved deflector e about its fulcrum i on the spouta (Fig. 6) or of the strai ht deflector f about its fulcrum 70 (Fig. 7

I wish it to be understood that I do not desire to be limited to. theexact details of construction shownand described, for'ob-- respectively,designed to effect a deflection i vious modifications will occur to aperson skilled in theart.

I claim:

1. Device for casting. hollow bodies by the centrifugal processcomprising a substantially horizontally arranged spout and a deflectormovable on said spout and arranged for alternately allowing or barringthe flow of metal from said spout in the direction of its axis.

2. Device for casting hollow bodies by the centrifugal process,comprising a substantially horizontally arranged spout and a deflectormovable on said spout and arranged for alternately allowing or barringthe flow of metal from said spout in the direction of its axis.

3. Device for casting hollow bodies by the centrifugal processcomprising a substantially horizontally arranged spout and a deflectoraxially movable on said spout and arranged for alternately allowing orbarring the flow of metal from said spout in the direction of its axis.

4. Device for casting hollow bodies by the centrifugal processcomprisinga substantially horizontally arranged spout and a de flector withslotted bottom axially movable on said spout and arranged foralternately allowing or barring the flow of metal from said spout in thedirection of its axis.

5. Device for casting hollow bodies by the centrifugal processcomprising a substantially horizontally arranged spout and ahorizontally curved deflector movable on said spout and arranged foralternately allowing or barring the flow of metal from said spout in thedirection of its axis.

6. Device for casting hollow bodies by the centrifugal processcomprising a substantially horizontally arranged spent and ahorizontally curved deflector with slotted bottom axially movable onsaid spout and arranged for alternately allowing or barring the flow ofmetal from said spout in the direction of its axis.

In testimony whereof I aflix my signature.

HEINRICH BUROHA'RTZ.

